Work-clamp.



J. SAWYER. WORK CLAMP.

APPLICATION FILED MAR. 10, 1914.

1,1 WMM, v Patented June 20,1916.

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' WORK CLAMP.

APPLICATION FILED MAR- !0- i914.

Patented June 20, 1916.

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JAMES SAWYER, OF CRYSTAL SPRINGS, FLORIDA.

WORK-CLAMP.

Application filed March 10, 1914.

To all whom it may concern Be it known that I, J AMES SAWYER, a citizenof the United States, residing at Crystal Springs, in the county ofPasco and State of Florida, have invented certain new and usefulImprovements in ork-Clamps, of which the following is a specification.

The object of my invention is to provide a work-clamping device whereingripping or clamping action is employed to hold the work in place, andwherein the device is pro vided with means for supporting the work,which means may act as a support or not, in accordance with the size andcharacter of the material to be clamped.

A further object of the invention is to provide means for supporting thefree end of the work in the desired relation in which that end of thework which is gripped by the clamp, is supported.

Other objects and features of the inven tion will be more fullydescribed in connection with the accompanying drawings and will be moreparticularly pointed out and ascertained in and by the appended claims.

In the drawings: Figure 1 is a perspective view of the device of myinvention applied to a bench in the form of a table. Fig. 2 is asectional view on line 2--2 of Fig. 1. Fig. 3 is a detail view. Fig. 4is a sectional view on line 4& of Fig. 1. Fig. 5 is a detail detachedview of a hanger, employed in my invention. Fig. 6 is a perspective viewof a support. Fig. 7 is a perspective view of a clamping member.

Like characters of reference designate similar parts throughout thedifferent figures of the drawings.

1 have shown the device of my invention applied to a bench in the formof a table having a table top 1 and supporting legs 2.

My improved clamp comprises a hanger 3 which is longitudinally slottedat 4, and the upper end of which is bent at right angles, as indicatedat 5, to the body portion of said hanger. The angle end 5 is adapted toextend over the top of the table or bench 1 and be held inlongitudinally adjusted positions by means of a bolt 6 adapted to beextended through holes 7. The clamping device of my invention willusually be located in a given position and frequent adjustment willusually not be necessary and therefore I have shown the bolt 6 providedwith a common form of nut 8.

I adjustably mount upon the hanger 3 a Specificationof Letters Patent.

Patented June 2b, 1916.

Serial No. 823,756.

supporting member which may be in the form of a triangular frame 9. Thesupporting frame 9 is provided with an opening 10 for attachment of theframe 9 to the hanger .3 by means of a bolt 11 and a thumb-nut 12.

The slot 4 provides for vertical adjustment of the supporting frame 9within necessary limits. The top 13 of said frame 9, is slotted at 14.,for adjustable anchorage thereon of a clamping member 15, shown moreparticularly in Fig. 7. The clamping member 15 is provided with athreaded stud 16 which projects through the slot 1 1 and which may beheld in adjusted positions by a thumbnut 17. If desired, I may providethe clamping member 15 with a clamping screw 18 having a clamping disk19 and adapted to be adjusted by a thumb-nut 20.

It will be readily seen that vertical adjustment of the frame 9 andhorizontal adjustment of the clamping member 15, provide means forclamping any size of stock to be dressed between the clamping member 15and the hanger 3 for the desired projection of the stock above theworking surface of the bench 1. When the stock is heavy, or whendownward pressure is exerted thereon, a part 21, of the frame 9, may actas a support if the frame is adjusted into the desired position. Thus itwill be seen that I have provided an improved clamp wherein it is notnecessary to rely wholly upon the clamping action in order to sup portthe stock for various dressing operations thereon as the clamp 19 mayact merely to hold the stock from lateral movement. This is particularlyadvantageous where it is desired to bore a hole or otherwise operateupon finished stoclcwhich would be injured or have its surfaceappearance impaired by clamping action sufficient to support and alsohold the stock in position.

In cases where the stock to be operated upon is of considerable length,and where it may be necessary to dress an edge throughout the length ofthe stock, I provide supporting means which is adjustable on the bench1, to or from the improved clamp, and which is also adjustablevertically and parallel with the improved clamp just described.

As shown, 22 designates a hanger which is provided with a bent terminalend 23 which is adapted to rest upon the top of the bench or table 1. Aplurality of openings 24 afford adjustment on the hanger 22 of a Worksupport in the form of a bracket 25.

The bracket is provided with a work-receiving and supporting portion 26,and also with a lug 27 adapted to be projected into any one of theopenings 24 to anchor the bracket in any desired vertical position. Thelug 24 projects through the openings a sufficient extent to effectivelysupport the bracket 25 without any additional fastening means in View ofthe fact that the clamping device securely holds the work againstmovement away from the bench or table. I may slot the bench or table 1,as indicated at 28, for longitudinal adjustment of the hanger j 22 ofthe table 1, toward or from the clamping device.

The hanger 22 1s provlded with a terminal bent end 29 which is movablein a longitudinal slot 30 of the table or bench 1. By this means thehanger 22 may be freely adjusted toward or from the clamping device atany desiredeposition' and it will hold itself in the position to whichit has been adjusted, However, if it is desired to lock the hanger 2 inan adjusted position, I may provide a plurality of holes 31 throughwhich a bolt 32 may be projected. In cases where it is desired tolocktlie bolt 32, I will provide a nut 33 thereon for this purpose.

I 'It' will be seen that I have provided a Wide range of adjustment,both laterally and vertically, for' the devices constituting myinvention, but if the range of adjustment should prove insufficient forstock of great length and small cross section, it would be an easy'matter to insert supportlng blocks of'wood upon the bracket 25 and uponthe supporting portion 21 to obtain an additional height of worksupport.

I believe that the utility and advantages of my invention will be fullyunderstood from the foregoing description and while I have herein shownand described one specific embodiment thereof, I do not wish to belimited thereto except for such limitations as the claims may import.

I claim 1. In a work clamp, a bench, a clamp device mounted adjacent oneend of the bench, said bench having a first groove and a second grooveformed therein, that portion of the bench between said grooves beingprovided with openings, a hanger, a terminal portion formed upon thehanger to fit the first mentioned groove, the latter affording a guidemeans therefor during adjustment, the hanger being further provided witha series of openings, the uppermost of the openings being in registrywith said second groove, an adjustable support member provided with anextension adapted to fit any one of the mentioned openings formed in thehanger, and means carried by the hanger and adapted for fittingengagement with one of the mentioned openings in the bench to anchor thehanger in an adjusted position, substantially as described.

' 2. In a work clamp, a bench, a clamp device for' the work mounted onone portion of the bench, said bench having a first groove formed in thetop face thereof adjacent and parallel with one of the longitudinaledges and a second groove formed in the men tioned longitudinal edge,that portion of the bench between the mentioned grooves being providedwith uniformly spaced openings, a hanger comprising a strip of materialdepending from the bench and bent to slide upon the'edge thereof towardand from the clamp device, a terminal portion formed upon the hanger tofit the first mentioned groove, the latter affording a guide meanstherefor during adjustment, the hanger being further provided with aseries of uniformly spaced openings, the uppermost of the mentionedopenings being in registry with the marginal groove aforesaid, and asupport member ad ustable vertically relatively to the hanger, the saidsupport member being provided with an extension adapt- W. H. BRorHY,Mrs. C. A. MUTISPAUGH.

Copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents.

, I j Washington, D. G."

